/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *    https://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */

package org.grails.gorm.rx.services.implementers

import groovy.transform.CompileStatic
import org.grails.datastore.gorm.services.ServiceImplementer
import org.grails.datastore.gorm.services.ServiceImplementerAdapter
import org.grails.datastore.gorm.services.implementers.AbstractProjectionImplementer
import org.grails.datastore.gorm.services.implementers.IterableServiceImplementer
import org.grails.datastore.gorm.services.implementers.SingleResultServiceImplementer

/**
 * Adapts {@link ServiceImplementer} implementations for use in RxJava
 *
 * @since 6.1.1
 * @author Graeme Rocher
 */
@CompileStatic
class ObservableServiceImplementerAdapter implements ServiceImplementerAdapter {
    @Override
    ServiceImplementer adapt(ServiceImplementer implementer) {
        if(implementer instanceof SingleResultServiceImplementer) {
            return new SingleResultAdapter((SingleResultServiceImplementer)implementer)
        }
        else if(implementer instanceof IterableServiceImplementer) {
            return new ObservableResultAdapter((IterableServiceImplementer)implementer)
        }
        return null
    }

}
